Narrow Linewidth Tm:YLF Laser with Volume Bragg Grating Dual-End-Pumped by Equidirectional-Polarization Fiber-Coupled Laser Diode |
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| Authors: | Yue Li Xin-Yu Chen Jing-Liang Liu Chun-Ting Wu Hang Dong Guang-Yong Jin |
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| Affiliation: | 1.Jilin Key Laboratory of Solid Laser Technology and Application School of Science,Changchun University of Science and Technology,Changchun,P.R. China |
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| Abstract: | We demonstrate a narrow linewidth Tm:YLF laser with a volume Bragg grating (VBG) that was pumped by an equidirectional-polarization fiber-coupled laser diode using a dual-end-pumping configuration. For an optimized output coupler with a radius of curvature of 150 mm and transmission of 15% at a wavelength of 1.91 μm, the maximum output power was 15.6 W for an absorbed pump power of 51.7 W at 1,907.93 nm, and the output had a narrow linewidth of 0.22 nm. This corresponds to an optical-to-optical conversion efficiency of 30.2% and the slope efficiency was 36.7%. |
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